OLED Technology Evolution and New OLED Applications |
|
In this post I will present some historical data about the well known lighting system OLED, some OLED applications, and the OLED’s evolution. First OLED systems( Organic Light Emitting Diode Display) were used in 1960. When OLED appeared, display technology was revolutionized, because this new system was more efficient than usual displays.
The regular display was very simple, based on incandescent filaments, portions of the filament, able to display short numbers or few letters. The life-duration of these systems was usually short, due to some vacuum tubes used. In 1987 researchers at the Kodak Laboratories found an organic material able to emit light by recombination, when it was connected to electricity. First similar organic material was Alq3, able to produce a green light and it was based on aluminum. In time, Kodak developed several types of organic materials with different colors (white, green, red, blue) but the company that launched the first display based on an organic diode (OLED), was Pioneer Corporation from Japan.
So, organic materials discovered by Kodak were used by Pioneer in OLED display production for audio systems or mobile phones. Researchers found also other similar types of materials able to emit light, light emitting Polymer (organic polymer-PEL).
This technology was discovered at Cambridge University and was used by Philips Electronics Corporation. They launched for the first time on the market, CDT (Cambridge Display Technology). OLED technology is very much used today on portable devices (MP3 players, mobile phones, audio systems, digital cameras). The main advantages with this type of display are: the low-level of energy consumption and a high efficient lighting. Another advantage of OLED displays is the view angle (any image can be viewed from any low-angle).
Now, after years of development in OLED technology, researchers are trying to improve OLED systems. Recently, researchers from SRI International, have found a new method to increase OLED’s efficiency, using a special design with regularly placed cavities.
The new system is more efficient than usual OLEDs, actually lighting efficiency is up to 5 times higher with the same amount of energy consumed. This technology is called COLED, and is based on light-emitting polymers developed by Japan-based SDK.
| Subscribe By Email / RSS >>> Get Free Updates >>> |
You might also like:
Tags: Alq3, Cambridge Display Technology, Cambridge University, CDT, COLED, display technology, efficient lighting, emit light, green light, improved OLED, incandescent filaments, Japan-based SDK, Kodak Laboratories, light emitting Polymer, light-emitting polymers, lighting system, low-angle, OLED, OLED applications, OLED display, OLED evolution, OLED systems, OLED’s efficiency, organic diode OLED, Organic Light Emitting Diode, organic material, organic polymer, PEL, Philips Electronics, Pioneer Corporation, regularly placed cavities, usual displays, vacuum tubes, view angle